Giant Donax Plant Care

Giant Donax (Donax canniformis) belongs to the Marantaceae family within the Donax genus. Giant Donax is also known as Wild Cane.

Giant Donax displays a clumping, low rosette growth habit, reaching up to 2 ft tall with a spread of approximately 2 ft. Giant Donax produces small, inconspicuous flowers surrounded by colorful bracts.

Leaf size: approximately 12 inches.

Water a young or newly planted Giant Donax every 7–10 days, soaking the whole root zone, until it is established — usually one to two growing seasons. Established shrubs mainly need water during long dry spells. In a container, water whenever the top few centimetres of soil are dry.

Giant Donax thrives in bright indirect to low light. Avoid placing Giant Donax in direct, harsh sunlight for extended periods, as this can scorch the foliage.

Donax canniformis tolerates temperatures of 65–80°F. Giant Donax prefers humidity levels of 50–70%. A pebble tray or humidifier helps maintain adequate moisture around the plant.

Rich, well-draining potting mix with added perlite and peat moss. Good drainage is essential for Giant Donax to prevent waterlogging, which leads to root rot and fungal issues.

Feed Giant Donax every 6 months during the growing season with a balanced, slow-release fertilizer at the rate on the label. Established shrubs in good soil often need little extra feeding, so let weak growth or pale foliage guide you.

Stop feeding by late summer so new growth can harden before winter.

The PlantoScan app can remind you when to water and when to fertilize each plant.

Choose a spot with bright indirect to low light and rich, well-draining potting mix with added perlite and peat moss. Avoid low spots where water collects after rain.

Giant Donax is suited to USDA Zone 13b.

Plant container-grown or balled-and-burlapped shrubs in spring or early autumn, setting the root flare at soil level, and water well after planting.

Giant Donax can spread to about 2 ft (0.6 m) and reach about 2 ft (1 m) tall. Space plants about 2 ft (0.6 m) apart so mature crowns don't crowd each other, and plant at least half that distance from buildings, fences and paths.

Planning a row or hedge? Try the plant spacing calculator.

Prune Giant Donax while it is dormant in late winter: first remove dead, damaged and crossing branches, then thin lightly for shape.

If it flowers in spring, prune right after flowering instead so you don't remove next year's buds. Never take off more than about a quarter of the shrub in one year.

Giant Donax is frost-tender (hardy to USDA zone 13). In colder areas grow it in a container and move it to a bright, frost-free place before the first frost.

Giant Donax can be propagated through division of rhizomes, stem cuttings.

See all plants toxic to cats and plants toxic to dogs.

Giant Donax is susceptible to spider mites, aphids, mealybugs. Inspect the foliage regularly, especially along leaf undersides and stems. Treat infestations promptly with insecticidal soap or neem oil to prevent spread.

Yellow leaves, brown tips or drooping? See common plant problems and how to fix them.

Giant Donax grows outdoors in USDA Zone 13b. It survives winters down to planting zone 13b. In cooler regions, grow Giant Donax as a houseplant or bring it indoors before the first frost.